None

Early use of the sun -- Solar architecture in ancient Greece -- Roman solar architecture -- Burning mirrors -- Heat for horticulture -- Solar hot boxes -- Power from the sun -- The first solar motors -- Two Amerian pioneers [John Ericsson, Aubrey Eneas] -- Low temperature solar motors -- The first practical solar engine -- Solar water heating -- Early solar water heaters -- Hot water -- day and night -- A flourishing solar industry -- Solar house heating -- Solar communities of Europe -- Solar heating in early America -- An American revival -- Solar collectors for house heating -- The modern era -- Postwar energy perspectives -- Worldwide solar water heating -- Full circle.